MIL-DTL-62542C
3.5.8 Ease of installation and operation. The BSLA shall be capable of being easily
installed and removed from the semitrailer and shall be free from installation interferences. While
installed on the semitrailer, the BSLA shall be capable of operating smoothly under a
27 000 lbs (12 247 kg) payload along the full extension and retraction of the BSLA.
3.5.9 Rod end. The rod end shall provide means to hold the bearing cage in line with the
interfacing clevis to prevent torque impact of the BSLA when installed on the trailer.
3.5.10 Steam and water jet cleaning. The BSLA shall be capable of being cleaned with
high pressure steam and with a high pressure water jet without damage or leakage past the seals.
There shall be no deterioration of the seals.
3.5.11 Operational reliability. The BSLA shall conform to the load, cycling rates,
holding load, and temperatures as specified in 3.3.2, 3.3.4, 3.5.11.1, and 3.6.2 after 1150 cycles of
operation.
3.5.11.1 Cycling rate. A cycle shall consist of one full extension and full retraction of the
BSLA and shall be performed within the following time frames. A complete operating cycle shall
not exceed three minutes.
Extension cycle
1.5 minutes maximum
Hold
6 minutes minimum
Retraction cycle
1.5 minutes maximum
Hold
21 minutes minimum
Complete cycle
30 minutes maximum
3.5.11.2 Reliability conformance. The BSLA shall demonstrate a combined mean cycle
between failure (MCBF) of no less than 2000 cycles. Test incidents shall be assessed during
operational reliability cycle testing as specified in 4.7.1.
3.5.12 Maintainability. During the reliability conformance testing, there shall be no more
than one (1) manhour per BSLA of active scheduled/preventative maintenance performed.
3.5.13 Human engineering factors. The manual override shall not require operator forces
that exceed the strength limits of the 5th percentile female as specified for high force controls for
arm, hand, and thumb-finger controls when using the socket wrench as specified in 3.5.4.
3.5.14 Corrosion resistance. The component shall be able to operate in varying or
extended periods in corrosive environments involving one or more of the following: high
humidity, salt spray, road de-icing agents, gravel impingement, atmospheric contamination and
temperature extremes. Only normal washing, scheduled maintenance and repair of accidentally
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